<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="zh-CN">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE8"/>
    <title></title>
</head>
<body>
<p>
    <button class="js-copy-bob-btn">Set clipboard to BOB</button>
    <button class="js-copy-jane-btn">Set clipboard to JANE</button>
</p>
<p>
    <textarea class="js-test-textarea" cols="50"
              rows="10">Try pasting into here to see what you have on your clipboard:</textarea>
</p>
</body>
<script src="http://apps.bdimg.com/libs/jquery/1.8.3/jquery.min.js"></script>
<script type="text/javascript">
    function copyTextToClipboard(text) {
        var textArea = document.createElement("textarea");

        //
        // *** This styling is an extra step which is likely not required. ***
        //
        // Why is it here? To ensure:
        // 1. the element is able to have focus and selection.
        // 2. if element was to flash render it has minimal visual impact.
        // 3. less flakyness with selection and copying which **might** occur if
        //    the textarea element is not visible.
        //
        // The likelihood is the element won't even render, not even a flash,
        // so some of these are just precautions. However in IE the element
        // is visible whilst the popup box asking the user for permission for
        // the web page to copy to the clipboard.
        //

        // Place in top-left corner of screen regardless of scroll position.
        textArea.style.position = 'fixed';
        textArea.style.top = 0;
        textArea.style.left = 0;

        // Ensure it has a small width and height. Setting to 1px / 1em
        // doesn't work as this gives a negative w/h on some browsers.
        textArea.style.width = '2em';
        textArea.style.height = '2em';

        // We don't need padding, reducing the size if it does flash render.
        textArea.style.padding = 0;

        // Clean up any borders.
        textArea.style.border = 'none';
        textArea.style.outline = 'none';
        textArea.style.boxShadow = 'none';

        // Avoid flash of white box if rendered for any reason.
        textArea.style.background = 'transparent';


        textArea.value = text;

        document.body.appendChild(textArea);

        textArea.select();

        try {
            var successful = document.execCommand('copy');
            var msg = successful ? 'successful' : 'unsuccessful';
            console.log('Copying text command was ' + msg);
        } catch (err) {
            console.log('Oops, unable to copy');
        }

        document.body.removeChild(textArea);
    }


    /*var copyBobBtn = document.querySelector('.js-copy-bob-btn'),
        copyJaneBtn = document.querySelector('.js-copy-jane-btn');

    copyBobBtn.addEventListener('click', function(event) {
        copyTextToClipboard('Bob');
    });


    copyJaneBtn.addEventListener('click', function(event) {
        copyTextToClipboard('Jane');
    });*/

    $('.js-copy-bob-btn').click(function(){
        copyTextToClipboard('Bob');
    });

    $('.js-copy-jane-btn').click(function(){
        copyTextToClipboard('Jane');
    });
</script>
</html>
